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AD7656A 数据表(PDF) 11 Page - Analog Devices

部件名 AD7656A
功能描述  250 kSPS, 6-Channel, Simultaneous Sampling, Bipolar 16-Bit ADC
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD7656A 数据表(HTML) 11 Page - Analog Devices

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AD7656A
Data Sheet
TYPICAL PERFORMANCE CHARACTERISTICS
0
–160
0
FREQUENCY (kHz)
125
–20
–40
–60
–80
–100
–120
–140
25
50
75
100
VDD/VSS = ±15V
AVCC/DVCC/VDRIVE = +5V
INTERNAL REFERENCE
±10V RANGE
TA = 25°C
fS = 250kSPS
fIN = 50kHz
SNR = +87.33dB
SINAD = +87.251dB
THD = –104.32dB
SFDR = –104.13dB
Figure 4. FFT for ±10 V Range
0
–160
0
FREQUENCY (kHz)
125
–20
–40
–60
–80
–100
–120
–140
25
50
75
100
VDD/VSS = ±12V
AVCC/DVCC/VDRIVE = +5V
INTERNAL REFERENCE
±5V RANGE
TA = 25°C
fS = 250kSPS
fIN = 50kHz
SNR = +86.252dB
SINAD = +86.196dB
THD = –105.11dB
SFDR = –98.189dB
Figure 5. FFT for ±5 V Range
2.0
–2.0
0
10k
20k
30k
40k
50k
60k 65535
CODE
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
AVCC/DVCC/VDRIVE = +5V
VDD/VSS = ±12V
fSAMPLE = 250kSPS
2 × VREF RANGE
INL WCP = 0.64LSB
INL WCN = –0.76LSB
Figure 6. Typical INL
2.0
–2.0
0
10k
20k
30k
40k
50k
60k 65535
CODE
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
AVCC/DVCC/VDRIVE = +5V
VDD/VSS = ±12V
fSAMPLE = 250kSPS
2 × VREF RANGE
DNL WCP = 0.81LSB
DNL WCN = –0.57LSB
Figure 7. Typical DNL
90
60
10
1000
ANALOG INPUT FREQUENCY (kHz)
100
85
80
75
70
65
AVCC/DVCC/VDRIVE = +5.25V
VDD/VSS = ±16.5V
±10V RANGE
AVCC/DVCC/
VDRIVE = +5V
VDD/VSS = ±12V
±5V RANGE
AVCC/DVCC/
VDRIVE = +5V
VDD/VSS = ±5.25V
±5V RANGE
AVCC/DVCC/
VDRIVE = +4.75 V
VDD/VSS = ±10V
±10V RANGE
fSAMPLE = 250kSPS
INTERNAL REFERENCE
TA = 25°C
Figure 8. SINAD vs. Analog Input Frequency
–60
–120
10
1000
ANALOG INPUT FREQUENCY (kHz)
100
–70
–80
–90
–100
–110
AVCC/DVCC/
VDRIVE = +5V
VDD/VSS = ±12V
±5V RANGE
AVCC/DVCC/
VDRIVE = +5.25V
VDD/VSS = ±16.5V
±10V RANGE
fSAMPLE = 250kSPS
INTERNAL REFERENCE
TA = 25°C
AVCC/DVCC/VDRIVE = +5V
VDD/VSS = ±5.25V
±5V RANGE
AVCC/DVCC/
VDRIVE = +4.75V
VDD/VSS = ±10V
±10V RANGE
Figure 9. THD vs. Analog Input Frequency
Rev. 0 | Page 10 of 28


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